package com.dayvisit;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;

import java.io.IOException;

public class DayVisitMapper extends Mapper<LongWritable, Text, Text, IntWritable> {

    private final Text keyOutDay = new Text();
    private final IntWritable valueOutVisitNum = new IntWritable(1);

    @Override
    protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
        String strLine = value.toString();
        String[] strArray = strLine.split("\t");

        String strDay = strArray[4];
        keyOutDay.set(strDay);

        context.write(keyOutDay, valueOutVisitNum);
    }
}
